aequasi/cache-bundle (2.3.1)
Creates services in Symfony 2, for cache, that can also be used with doctrines three cache types (metadata, result, and query). It also provides functionality for session handler support, and Router support.

voceconnect/wp-large-options (1.0.0)
You may wish to store a larger option value than is recommended on WordPress.com. If your option data will exceed 400K, or is of an unpredictable size (such as an HTML fragment etc.) you should use the wp_large_options plugin to store the option in a cache-safe manner. Failure to do this could result in the option not being cached, and instead fetched repeatedly from the DB, which could cause performance problems.

tureki/php-validator (0.5.0)
PHP validator is a best library to verify the data submitted from front-end. This library setting format follow Bootstrapvalidator. That mean if you front-end use Bootstrapvalidator, back-end use PHP validator. You just need to define a format that can double validate front-end and back-end.